Frequencies for vin_bt variable in vehnit dataset : vin_bt | Freq. Percent Cum. ------------+----------------------------------- | 2 0.16 0.16 2D | 10 0.79 0.94 2H | 21 1.65 2.59 2T | 1 0.08 2.67 2W | 6 0.47 3.14 3C | 5 0.39 3.54 3P | 1 0.08 3.62 4C | 45 3.54 7.15 4D | 389 30.58 37.74 4H | 9 0.71 38.44 4W | 32 2.52 40.96 99 | 79 6.21 47.17 BU | 4 0.31 47.48 CB | 32 2.52 50.00 CC | 42 3.30 53.30 CG | 10 0.79 54.09 CH | 3 0.24 54.32 CP | 52 4.09 58.41 CV | 9 0.71 59.12 CW | 52 4.09 63.21 DP | 1 0.08 63.29 DS | 92 7.23 70.52 EC | 4 0.31 70.83 ES | 19 1.49 72.33 EW | 1 0.08 72.41 IC | 5 0.39 72.80 IE | 2 0.16 72.96 LL | 1 0.08 73.03 MY | 2 0.16 73.19 PC | 25 1.97 75.16 PK | 80 6.29 81.45 PS | 10 0.79 82.23 RS | 13 1.02 83.25 S2 | 4 0.31 83.57 SV | 29 2.28 85.85 SW | 13 1.02 86.87 TB | 7 0.55 87.42 TM | 14 1.10 88.52 UT | 132 10.38 98.90 VN | 7 0.55 99.45 YY | 7 0.55 100.00 ------------+----------------------------------- Total | 1,272 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016